Unstable desert environments and vulnerability to plant invasions. A field and remote sensing assessment

E. Sánchez Flores, H. Rodríguez Gallegos, S. Yool, A. Granados Olivas

Research output: Contribution to conferencePaper

Abstract

Exotic plant invasions threaten biodiversity and ecosystem viability worldwide. We hypothesized that dynamic desert environments are unstable, therefore more vulnerable to plant invasions. To test this hypothesis we combined statistical and spatial analysis with field methods at multiple spatial and temporal scales to assess the potential distribution of the exotics Brassica tournefortii and Schismus arabicus in 'El Pinacate y Gran Desierto de Altar' Biosphere Reserve (PBR) in Sonora, Mexico. Combined models of high probability of invasion -influenced by human factors- and dynamic landscapes -detected in areas of past agricultural and current grazing activity- were tested with confirmed invasive locations. Results confirmed the hypothesis of the study and suggest that more dynamic landscapes are more prone to invasion by these two exotic plants in the PBR. These findings cannot, however, be conclusive due to the complex ecology of these invasives.

Original languageEnglish (US)
StatePublished - Dec 1 2007
Event32nd International Symposium on Remote Sensing of Environment: Sustainable Development Through Global Earth Observations - San Jose, Costa Rica
Duration: Jun 25 2007Jun 29 2007

Other

Other32nd International Symposium on Remote Sensing of Environment: Sustainable Development Through Global Earth Observations
CountryCosta Rica
CitySan Jose
Period6/25/076/29/07

Keywords

  • 'El Pinacate' Biosphere Reserve
  • CVA
  • GARP
  • IKONOS
  • Invasive species
  • Land cover classification
  • Predictive modeling

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Environmental Engineering

Fingerprint Dive into the research topics of 'Unstable desert environments and vulnerability to plant invasions. A field and remote sensing assessment'. Together they form a unique fingerprint.

  • Cite this

    Sánchez Flores, E., Rodríguez Gallegos, H., Yool, S., & Granados Olivas, A. (2007). Unstable desert environments and vulnerability to plant invasions. A field and remote sensing assessment. Paper presented at 32nd International Symposium on Remote Sensing of Environment: Sustainable Development Through Global Earth Observations, San Jose, Costa Rica.